What kind of holster is that. I love the look along with the wood grips.

That is one I made for a lady friend of mine,,,
She inherited a nickel-plated S&W Model 15 Combat Masterpiece.

That particular holster is my rendition of a style called the Tom Threepersons holster,,,Tom Threepersons "(1889—1969) was a Cherokee lawman. He is considered to have been one of the last of what were considered to be gunfighters of the Old West, although his career did not begin until the early 20th century. He invented the "Tom Threepersons holster."